Bump cap



FIG. 1 is a front isometric view of the design;

FIG. 2 is a front elevational view of the design;

FIG. 3 is a side elevational view of the design;

FIG. 4 is a top plan view of the design;

FIG. 5 is a bottom plan view of the design; and,

FIG. 6 is a rear elevational view of the design. 

CLAIM The ornamental design for a bump cap, as shown and described. 